Gilera 633721 Workshop Manual page 153

Nexus 500 euro 3
- Check that the cam contact sliding block and the
articulated register plate is free from wear.
- In case of wear, replace the component.
Refitting the head and timing system components
- Insert the chain guide sliding block.
- Insert the two centring dowels between head and
cylinder.
- Install the head gasket.
N.B.
THE FIGURE SHOWS THE INSERTION POSITION OF THE TWO CENTRING DOWELS BETWEEN
HEAD AND CYLINDER. THE DIRECTION OF INSTALLATION FOR THE GASKET IS FORCED BY
THE DOWELS.
- The head gasket is made of steel and has a
standard thickness.
- Check that the head lubrication channel is per-
fectly clean. Clean with compressed air jets, if
required.
- Insert the head.
- Lubricate the stud bolts and the 4 fixing stud
bolts.
Engine
ENG - 153